Improvement in permutation-locks



. -2 Sheets--Sheet1.

P. W. HALL.

Permutation Locks. No; 142,695. Patented September9,1873.

2 Shets--Sheet 2.

P. W. HALL. Permutation Locks.

Patented September 9,1873

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UNITED STATES PATENT OFFICE.

PHIDELLO W. HALL, OF CALVERT, TEXAS.

IMPROVEMENT IN PERMUTATlON-LOCK-S.

Specification forming part of Letters Patent No. 142,695, dated September 9, 1873; application filed August 21, 1873.

To all whom it may concern:

Be it known that I, PHIDELLO W. HALL, of Calvert, in the county of Robertson and in the State of Texas, have invented certain new and useful Improvements in Combination-Lock; and do hereby declare that the. following is a full, clear, and exact description thereof, reference being had to the accompanyin g drawings and to the letters of reference marked thereon, making a part of this speciflcation.

The nature of my invention relates to an improvement in combination-locks; and it consists in various devices, which are operated by a revolving wheel having a number of projections or pins upon its periphery, which differ so materially from each other in shape that they can be easily recognized by day or night by the touch alone. The edge of this wheel projects through the frame of the lock on each side, where there is provided suitable letters or figures, upon which the combinations can be set, there being, also, a spring-pin on the outer side, which allows the combination to be readily found in the dark, so that the lock can be used as a combination night-latch upon street-doors. It also consists in the arrangement and combination of devices, which may be applied to any kind of a bolt which is thrown forward and retracted by means of a key or other devices.

Figure 1 is a side elevation of the operating parts of the lock. Fig. 2 is a sectional view of the same. Fig. 3 is a front view of the Fig. 4 is a similar view of the outer sleeve and wheel connected. Fig. 5 is a sectional view of the outer sleeve and wheel. Fig. 6 is a perspective of the outer plate of the lock, having the indicator for the night combination attached. Fig. 7 is a sectional view of the same. Figs. 8 and 10 show a modification of myinvention. Fig. 9 is a cross-section of the locking-slide. Fig. 11 is a side view of a part of the inner plate, with the pivoted hook or stop and the indexes, showing upon what figure the combination is set. Fig. 12 is a perspective of the two locking-slides. Fig. 13 is a cross-section of the bolt and sleeves, showing the two slots together. Fig. 14 is a plan view of one of the sleeves. Fig. 15 is a section of the operating parts, showing the locking-slides moved back, so as to allow the combination to be changed.

Fig. 16 is a side elevation of a part of the large rotating wheel.

a represents an ordinary lock-frame of any desired shape or size. Moving back and forth through the frame, in the usual manner, is the spring-bolt b, which has a projection, pin, or flange, d, secured to its side, which enters in the slots of the sleeves, and pushing back the locking-slides therein, and which flange has its inner end corrugated, for purposes more fully described hereafter. Passing over the shank of the bolt b is a slotted sleeve, 0, having its front end corrugated, as shown in Figs. 1 and 3, and which has suitable flanges 01 formed upon its rear end, in which the rotating Wheel 6 is held in such a manner that it can be freely revolved around when not locked in position by the locking-slide 4:- This rotating wheel 6 has a number of projections, 1, formed upon its periphery, of difl'erent shapes, so as to be readily recognized by the touch, and which are intended to be used by night, or when the letters cannot be seen. Between these projections 1 are a number of letters, as seen in Fig. 1, and between these letters are formeda number of small grooves, as shown in Fig. 3, which serve not only to roughen the wheel, so that it can be revolved by the fingers, but to indicate the point at which the combination is set. Formed upon the outer side of the wheel is a circular flange, having upon its inner surface a deep notch, 2, to correspond to each projection 1 upon the periph cry of the wheel, and to indicate the point, or the starting-point, at which the combination is set, and a number of smaller notches, which indicate the number upon which the combination is set. wheel 0 are formed teeth 3, as shown in Fig. 16, in which the projection on the lockingslide 4 catches, and holds the wheel 0 in position, preventing it from turning on the sleeves. When the combination is to be changed, the slides 4t and 6 are forced back by the flange d on the bolt, thereby disengaging the flanges Upon the inner surface of the on the slides from the teeth on the wheels 0 7,

thus releasing the wheels and allowing them to freely revolve around the sleeves G 5, the said sleeves being, at the same time, held in 

